Frequencies for first 10,000 rows of last_mo variable in vehicle dataset :

       Last |
Accident,et |
    c-Month |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      3,072       30.72       30.72
          1 |        490        4.90       35.62
          2 |        454        4.54       40.16
          3 |        570        5.70       45.86
          4 |        583        5.83       51.69
          5 |        544        5.44       57.13
          6 |        497        4.97       62.10
          7 |        501        5.01       67.11
          8 |        513        5.13       72.24
          9 |        516        5.16       77.40
         10 |        514        5.14       82.54
         11 |        493        4.93       87.47
         12 |        511        5.11       92.58
         99 |        742        7.42      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Apr 2016